| 1. | a person or thing that adapts. |
| 2. | a connector for joining parts or devices having different sizes, designs, etc., enabling them to be fitted or to work together. |
| 3. | an accessory to convert a machine, tool, or part to a new or modified use. |
| 4. | Computers. expansion card. |
adapter a·dapt·er or a·dap·tor (ə-dāp'tər)
n.
One that adapts.
A connecting part that joins two pieces of apparatus.
A converter of electric current to a desired form.